<template>
  <view>
    <my-search @click="goSearch"></my-search> 
    <view class="scroll-view-container">
      <scroll-view class="left-scroll-view" scroll-y="true"  :style="{height: wh + 'px'}">
        <block v-for="(item,i) in cateList">
          <view :class="['left-scroll-view-item',i === active ? 'active' : '']" @click="activeChanged(i)">{{item.cat_name}}</view>  
        </block>
      </scroll-view>
      <scroll-view class="right-scroll-view" scroll-y="true" :style="{height: wh + 'px'}" :scroll-top="scrollTop">
        <view class="cate-lv2" v-for="(item2,i2) in cateLevel2" :key="i2">
          <view class="cate-lv2-title">
            / {{item2.cat_name}} /
          </view>
          <view class="cate-lv3-list">
            <view class="cate-lv3-item" v-for="(item3,i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
              <image :src="item3.cat_icon.replace('ugo-dev','hmugo-web')" mode=""></image>
              <text>{{item3.cat_name}}</text>
            </view>
          </view>
  
        </view>
      </scroll-view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        wh: 0,
        cateList: [],
        active: 0,
        cateLevel2: [],
        scrollTop: 0
      }
    },
    onLoad() {
      this.getWh()
      this.getCateList()
    },
    methods: {
      getWh(){
       const sysInfo = wx.getSystemInfoSync()
       console.log(sysInfo)
       this.wh = sysInfo.windowHeight - 50
      },
      async getCateList(){
        const {data: res} = await uni.$http.get('/api/public/v1/categories')
        console.log(res)
        this.cateList = res.message
        this.cateLevel2 = this.cateList[0].children
      },
      activeChanged(i){
        this.active = i
        this.cateLevel2 = this.cateList[i].children
        this.scrollTop = this.scrollTop ? 0 : 1
      },
      gotoGoodsList(item){
        uni.navigateTo({
          url:'/subpkg/goods_list/goods_list?cid='+item.cat_id
        })
      },
      goSearch(){
        console.log('go serach...');
        uni.navigateTo({
          url:"/subpkg/search/search"
        })
      }
    }
  }
</script>

<style lang="scss">
.scroll-view-container {
  display: flex;
  .left-scroll-view {
    width: 120px;
    .left-scroll-view-item {
      background-color: #f7f7f7;
      line-height: 60px;
      text-align: center;
      font-size: 12px;
      position: relative;
      &.active {
        background-color: #ffffff;
        &::before {
          content: " ";
          width: 3px;
          height: 30px;
          background-color: #c00000;
          display: block;
          position: absolute;
          top: 50%;
          transform: translateY(-50%);
        }
      }
    }
  }
  .right-scroll-view {
    background-color: #ffffff;
    
    .cate-lv2-title {
      font-size: 12px;
      font-weight: bold;
      text-align: center;
      padding: 15px 0;
    }
    .cate-lv3-list{
      display: flex;
      flex-wrap: wrap;
      .cate-lv3-item {
        display: flex;
        flex-direction: column;
        width: 33.33%;
        justify-content: center;
        align-items: center;
        margin-bottom: 10px;
        image {
          width: 60px;
          height: 60px;
        }
        text {
          font-size: 12px;
        }
      }
    }
  }
}
</style>
